/* Desktop-friendly lesson rails: controls sit beside cards without covering them.
   Keep the existing height-first selection area and Start/timer dock unchanged. */
.setup-simple .rail-navigation{display:grid;grid-template-columns:44px minmax(0,1fr) 44px;align-items:stretch;gap:8px;min-width:0;min-height:0;flex:1}
.setup-simple .rail-navigation .picker-rail{scroll-snap-type:none;scroll-behavior:auto}
.setup-simple .rail-step{align-self:center;display:grid;place-items:center;width:44px;min-height:52px;padding:0;border:1px solid #9acbdc;border-radius:12px;background:linear-gradient(150deg,#35647b,#1b435d);color:#f6fcff;font-size:36px;line-height:1;box-shadow:0 3px 0 #061b2d;cursor:pointer}
.setup-simple .rail-step:hover:not(:disabled){background:#427b91;border-color:#d3f8ff;transform:none}
.setup-simple .rail-step:disabled{opacity:.3;cursor:default;box-shadow:none}
.setup-simple .rail-step:focus-visible,.setup-simple .picker-rail:focus-visible{outline:3px solid #ffdf8a;outline-offset:2px}
.setup-simple .rail-scroll-hint{font-size:11px;font-weight:500;color:#b5d0da;visibility:hidden}
.setup-simple .rail-overflows .rail-scroll-hint{visibility:visible}
@media(max-width:760px){
 .setup-simple .rail-navigation{grid-template-columns:36px minmax(0,1fr) 36px;gap:4px;flex:0 0 auto}
 .setup-simple .rail-step{width:36px;min-height:48px;font-size:30px;border-radius:9px}
 .setup-simple .rail-scroll-hint{display:none}
}
/* Unit cards are toggle buttons: the selection stays visible above the rail. */
.setup-simple .unit-selection-tools{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:6px 16px;margin-top:10px}
.setup-simple .unit-selection-tools p{margin:0;flex:1 1 220px;color:#f7e7af;font-size:13px;font-weight:700;line-height:1.5;overflow-wrap:anywhere}
.setup-simple .unit-selection-tools .unit-actions{display:flex;gap:12px;margin:0;flex:0 0 auto}
.setup-simple .unit-selection-tools button{min-height:36px;margin:0;padding:5px 8px;font-size:12px}
.setup-simple .unit-selection-tools button:disabled{opacity:.45;cursor:default}
.setup-simple .unit-check{display:inline-grid;place-items:center;width:18px;height:18px;margin-right:3px;border:1px solid currentColor;border-radius:5px;font-style:normal;font-weight:900;font-size:13px;line-height:1}
.setup-simple .unit-card[aria-pressed=true] .unit-check{background:#176b62;color:#fff;border-color:#176b62}